BBC One 2025 1 season 5 eps 16+ Ended

The War Between the Land and the Sea

2025 1 season 5 eps 16+

6.6

86%

6.2

Season 1

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Season 1

All episodes

44 min

S1 · E1 · Dec 7, 2025

Homo Aqua Episode 1

Barclay's ordinary life becomes a world of terror when an ancient species rises from the sea. As UNIT fights for control, the summit on the Thames reveals terrifying secrets.

7.0 · You

47 min

S1 · E2 · Dec 7, 2025

Plastic Apocalypse Episode 2

Barclay becomes humanity's ambassador when the mysterious Salt emerges from the Tank. But his family's life is torn apart when Salt wreaks revenge upon all mankind.

7.1 · You

44 min

S1 · E3 · Dec 14, 2025

The Deep Episode 3

Barclay makes a terrifying descent into the world of Homo Aqua. Back on the land, Kate stands alone as Downing Street conspires with the army to change the course of the war.

6.9 · You

45 min

S1 · E4 · Dec 14, 2025

The Witch of the Waterfall Episode 4

Barclay and Salt go on the run in a war-torn London as UNIT reels from disaster. But when Tide threatens the land and Gunsberg advances his plans, the Severance schemes demand blood.

6.6 · You

54 min

S1 · E5 · Dec 21, 2025

The End of the War Episode 5

Barclay stands alone, Salt is lost, UNIT is powerless, and the oceans rise as the war reaches its climax. While traitors conspire, can Barclay find Salt before it's too late?

6.3 · You

5 episodes in Season 1

Some details come from TheTVDB.

The War Between the Land and the Sea